we've been relying upon this gentleman. a former fbi profiler and msnbc contributor. also don clark, a former fbi special agent in charge of the houston office. let's start right now, let's go to clint. clint, you're so good at this kind of thing. what did you make of the new information today since we talked last? the fact that it was bbs, it was nails, it was apparently a pressure cooker. we know it was, perhaps, detonated with a circuit board. tell me what all that tells you in terms of domestic, foreign, individual, or group? >> no. i'm -- the degree of sophistication, number one, yesterday we were talking about small ieds. it sounded like pipe bombs, that, you know, by in large we see people build in the united states all the time. when we start to get into the area of these pressure cooker bombs, well, as you know, chris, for example, back in 1976, there was a hijacking of a plane flying from new york to chicago.